Answer:

Step-by-step explanation:
We have been given a diagram of 2 triangles and we are asked to find the value of x.
We can see that triangle CDQ and RDB share a common angle and line CQ is parallel to line RB.
Since the corresponding angles formed by two parallel lines are equal, therefore,


As all the angles is both triangles are equal, therefore,
.
As both triangles are similar, so their corresponding sides will be proportional.
We can set a proportion for the sides of our given triangles as:





Therefore, the value of x is 27.